Measure of attenuation High Frequency: Application to variable attenuators

The ISO / IEC 17025 standard request to validate the standard methods used in metrology laboratory or when they use non-standard methods or out of scope. The validation of measurement methods ensures the traceability chain according to the International System of Units (SI) in the industrial metrology field. This referential also asked to evaluate the measurement uncertainty of the proposed methods. This paper presents the validation of the variable attenuation method High Frequency (HF). Within an intermediate verification methods has calibrations. On designed to develop a method based on the attenuation bolometric method to validate and verify the usual method IF (Intermediate frequency method).